Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440307 | Journal of the European Ceramic Society | 2017 | 38 Pages |
Abstract
The β-Sialons are potential candidates for high temperature application because of their excellent comprehensive performances. However, there is little research about dry sliding wear behavior of β-Sialons at wide range temperature. This study aims at revealing the mechanisms of how temperature, microstructure and mechanical properties affect the tribological properties of such composites. Four kinds of β-Sialons are prepared and their wear properties are characterized from 25 to 800 °C. Results show that β-Sialons have a preferable tribological property at 25 °C, which is ascribed to its excellent mechanical properties. Whereas, with temperature increasing, the wear rate increases two orders of magnitudes compared to 25 °C, owing to the reduced hardness and increased thermal stress of the sample. At 800 °C, the wear rate of composites decreases with z values increasing, which is attributed to the tribo-chemical reaction and generate more Al2O3 in β-Sialons with higher z values during sliding process.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Qichun Sun, Jun Yang, Bing Yin, Hui Tan, Yulin Liu, Jiongjie Liu, Jun Cheng, Zhuhui Qiao, Weimin Liu,